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Datos is just the plural of dato (datum or data point), which means, as its English translations, a (given) piece of information. The English translation of datos is data, but data has more meanings than just being one of the plurals of datum (the other is datums).

So, every time you talk about given data points or values, you can use the word dato; and more than one of those are datos. The word doesn't imply grouping, but doesn't exclude it either.

I concur with Rodrigo in that valores sounds better but datos is correct.